diff --git a/nano/core_test/active_transactions.cpp b/nano/core_test/active_transactions.cpp
index dc59f954..2b1bc50d 100644
--- a/nano/core_test/active_transactions.cpp
+++ b/nano/core_test/active_transactions.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/jsonconfig.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/scheduler/component.hpp>
diff --git a/nano/core_test/backlog.cpp b/nano/core_test/backlog.cpp
index facbf0b5..fa58f702 100644
--- a/nano/core_test/backlog.cpp
+++ b/nano/core_test/backlog.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/active_transactions.hpp>
 #include <nano/test_common/chains.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/core_test/block.cpp b/nano/core_test/block.cpp
index 2b669208..b187f63b 100644
--- a/nano/core_test/block.cpp
+++ b/nano/core_test/block.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stream.hpp>
 #include <nano/node/common.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/core_test/block_store.cpp b/nano/core_test/block_store.cpp
index 56f1c838..2b96b65b 100644
--- a/nano/core_test/block_store.cpp
+++ b/nano/core_test/block_store.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/lmdbconfig.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/stats.hpp>
diff --git a/nano/core_test/blockprocessor.cpp b/nano/core_test/blockprocessor.cpp
index 38ccdc65..381cd1a9 100644
--- a/nano/core_test/blockprocessor.cpp
+++ b/nano/core_test/blockprocessor.cpp
@@ -1,4 +1,5 @@
 #include <nano/lib/blockbuilders.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/node/node.hpp>
 #include <nano/node/nodeconfig.hpp>
 #include <nano/secure/common.hpp>
diff --git a/nano/core_test/bootstrap.cpp b/nano/core_test/bootstrap.cpp
index d1fbbb37..27c78bb2 100644
--- a/nano/core_test/bootstrap.cpp
+++ b/nano/core_test/bootstrap.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/bootstrap/block_deserializer.hpp>
 #include <nano/node/bootstrap/bootstrap_frontier.hpp>
 #include <nano/node/bootstrap/bootstrap_lazy.hpp>
diff --git a/nano/core_test/bootstrap_ascending.cpp b/nano/core_test/bootstrap_ascending.cpp
index a9ca2584..257b35c6 100644
--- a/nano/core_test/bootstrap_ascending.cpp
+++ b/nano/core_test/bootstrap_ascending.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/tomlconfig.hpp>
diff --git a/nano/core_test/bootstrap_server.cpp b/nano/core_test/bootstrap_server.cpp
index 9be0f8eb..80abdd80 100644
--- a/nano/core_test/bootstrap_server.cpp
+++ b/nano/core_test/bootstrap_server.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/test_common/chains.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/core_test/confirmation_height.cpp b/nano/core_test/confirmation_height.cpp
index 906c6bc2..b0d3c416 100644
--- a/nano/core_test/confirmation_height.cpp
+++ b/nano/core_test/confirmation_height.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/make_store.hpp>
diff --git a/nano/core_test/confirmation_solicitor.cpp b/nano/core_test/confirmation_solicitor.cpp
index c47ae54e..6cad1221 100644
--- a/nano/core_test/confirmation_solicitor.cpp
+++ b/nano/core_test/confirmation_solicitor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/jsonconfig.hpp>
 #include <nano/node/confirmation_solicitor.hpp>
 #include <nano/node/transport/inproc.hpp>
diff --git a/nano/core_test/conflicts.cpp b/nano/core_test/conflicts.cpp
index 644388bd..65ff27d1 100644
--- a/nano/core_test/conflicts.cpp
+++ b/nano/core_test/conflicts.cpp
@@ -1,4 +1,4 @@
-
+#include <nano/lib/blocks.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/scheduler/component.hpp>
 #include <nano/node/scheduler/priority.hpp>
diff --git a/nano/core_test/election.cpp b/nano/core_test/election.cpp
index fc193cc6..d008489f 100644
--- a/nano/core_test/election.cpp
+++ b/nano/core_test/election.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/scheduler/component.hpp>
 #include <nano/node/scheduler/priority.hpp>
diff --git a/nano/core_test/election_scheduler.cpp b/nano/core_test/election_scheduler.cpp
index af028dd9..b2af2740 100644
--- a/nano/core_test/election_scheduler.cpp
+++ b/nano/core_test/election_scheduler.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/scheduler/component.hpp>
 #include <nano/node/scheduler/priority.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/core_test/frontiers_confirmation.cpp b/nano/core_test/frontiers_confirmation.cpp
index 76812a6b..9d476ed3 100644
--- a/nano/core_test/frontiers_confirmation.cpp
+++ b/nano/core_test/frontiers_confirmation.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/active_transactions.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/core_test/ledger.cpp b/nano/core_test/ledger.cpp
index b8c827a9..ac26b842 100644
--- a/nano/core_test/ledger.cpp
+++ b/nano/core_test/ledger.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/threading.hpp>
diff --git a/nano/core_test/memory_pool.cpp b/nano/core_test/memory_pool.cpp
index 3e5049bc..1d9c1fc1 100644
--- a/nano/core_test/memory_pool.cpp
+++ b/nano/core_test/memory_pool.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/memory.hpp>
 #include <nano/node/active_transactions.hpp>
 #include <nano/secure/common.hpp>
diff --git a/nano/core_test/message.cpp b/nano/core_test/message.cpp
index 102af44d..3053bbf0 100644
--- a/nano/core_test/message.cpp
+++ b/nano/core_test/message.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stream.hpp>
 #include <nano/node/common.hpp>
 #include <nano/node/network.hpp>
diff --git a/nano/core_test/message_deserializer.cpp b/nano/core_test/message_deserializer.cpp
index 27133049..44e9fa06 100644
--- a/nano/core_test/message_deserializer.cpp
+++ b/nano/core_test/message_deserializer.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/transport/message_deserializer.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/core_test/network.cpp b/nano/core_test/network.cpp
index e6a514b9..2e15d5ef 100644
--- a/nano/core_test/network.cpp
+++ b/nano/core_test/network.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/network.hpp>
 #include <nano/node/nodeconfig.hpp>
 #include <nano/node/scheduler/component.hpp>
diff --git a/nano/core_test/network_filter.cpp b/nano/core_test/network_filter.cpp
index ae7f47e8..a886ae95 100644
--- a/nano/core_test/network_filter.cpp
+++ b/nano/core_test/network_filter.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stream.hpp>
 #include <nano/node/common.hpp>
 #include <nano/secure/common.hpp>
diff --git a/nano/core_test/node.cpp b/nano/core_test/node.cpp
index fa999b31..28dcae3d 100644
--- a/nano/core_test/node.cpp
+++ b/nano/core_test/node.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/node/election.hpp>
diff --git a/nano/core_test/optimistic_scheduler.cpp b/nano/core_test/optimistic_scheduler.cpp
index 0f03c04f..789eb66b 100644
--- a/nano/core_test/optimistic_scheduler.cpp
+++ b/nano/core_test/optimistic_scheduler.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/election.hpp>
 #include <nano/test_common/chains.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/core_test/processor_service.cpp b/nano/core_test/processor_service.cpp
index 9a9f33b1..959495d1 100644
--- a/nano/core_test/processor_service.cpp
+++ b/nano/core_test/processor_service.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/work.hpp>
diff --git a/nano/core_test/request_aggregator.cpp b/nano/core_test/request_aggregator.cpp
index dff32155..94f6d8c1 100644
--- a/nano/core_test/request_aggregator.cpp
+++ b/nano/core_test/request_aggregator.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/jsonconfig.hpp>
 #include <nano/node/request_aggregator.hpp>
 #include <nano/node/transport/inproc.hpp>
diff --git a/nano/core_test/scheduler_buckets.cpp b/nano/core_test/scheduler_buckets.cpp
index 0b3aff23..43912e29 100644
--- a/nano/core_test/scheduler_buckets.cpp
+++ b/nano/core_test/scheduler_buckets.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/scheduler/buckets.hpp>
 #include <nano/secure/common.hpp>
 
diff --git a/nano/core_test/system.cpp b/nano/core_test/system.cpp
index 8ac65cc7..b89524e8 100644
--- a/nano/core_test/system.cpp
+++ b/nano/core_test/system.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/node/transport/inproc.hpp>
 #include <nano/test_common/network.hpp>
diff --git a/nano/core_test/unchecked_map.cpp b/nano/core_test/unchecked_map.cpp
index 3688b6f5..105ee313 100644
--- a/nano/core_test/unchecked_map.cpp
+++ b/nano/core_test/unchecked_map.cpp
@@ -1,4 +1,5 @@
 #include <nano/lib/blockbuilders.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/node/unchecked_map.hpp>
 #include <nano/secure/common.hpp>
diff --git a/nano/core_test/vote_processor.cpp b/nano/core_test/vote_processor.cpp
index c19a8953..1da68596 100644
--- a/nano/core_test/vote_processor.cpp
+++ b/nano/core_test/vote_processor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/jsonconfig.hpp>
 #include <nano/node/transport/inproc.hpp>
 #include <nano/node/vote_processor.hpp>
diff --git a/nano/core_test/voting.cpp b/nano/core_test/voting.cpp
index cc95dd84..cf210e3a 100644
--- a/nano/core_test/voting.cpp
+++ b/nano/core_test/voting.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/common.hpp>
 #include <nano/node/voting.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/core_test/wallet.cpp b/nano/core_test/wallet.cpp
index 3c9802c6..079eb007 100644
--- a/nano/core_test/wallet.cpp
+++ b/nano/core_test/wallet.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/store/lmdb/wallet_value.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/core_test/wallets.cpp b/nano/core_test/wallets.cpp
index 38009cdb..f624f70d 100644
--- a/nano/core_test/wallets.cpp
+++ b/nano/core_test/wallets.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/store/versioning.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/core_test/websocket.cpp b/nano/core_test/websocket.cpp
index 317d999e..0735b5e4 100644
--- a/nano/core_test/websocket.cpp
+++ b/nano/core_test/websocket.cpp
@@ -1,4 +1,5 @@
 #include <nano/core_test/fakes/websocket_client.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/node/transport/fake.hpp>
 #include <nano/node/websocket.hpp>
 #include <nano/test_common/network.hpp>
diff --git a/nano/lib/CMakeLists.txt b/nano/lib/CMakeLists.txt
index 271091dc..c7029af7 100644
--- a/nano/lib/CMakeLists.txt
+++ b/nano/lib/CMakeLists.txt
@@ -21,6 +21,11 @@ add_library(
   ${platform_sources}
   asio.hpp
   asio.cpp
+  block_sideband.hpp
+  block_sideband.cpp
+  block_type.hpp
+  block_type.cpp
+  block_uniquer.hpp
   blockbuilders.hpp
   blockbuilders.cpp
   blocks.hpp
diff --git a/nano/lib/block_sideband.cpp b/nano/lib/block_sideband.cpp
new file mode 100644
index 00000000..e69de29b
diff --git a/nano/lib/block_sideband.hpp b/nano/lib/block_sideband.hpp
new file mode 100644
index 00000000..871f9bfc
--- /dev/null
+++ b/nano/lib/block_sideband.hpp
@@ -0,0 +1,69 @@
+#pragma once
+
+#include <nano/lib/block_type.hpp>
+#include <nano/lib/epoch.hpp>
+#include <nano/lib/numbers.hpp>
+#include <nano/lib/stream.hpp>
+#include <nano/lib/timer.hpp>
+
+#include <cstdint>
+#include <memory>
+
+namespace nano
+{
+class object_stream;
+}
+
+namespace nano
+{
+class block_details
+{
+	static_assert (std::is_same<std::underlying_type<nano::epoch>::type, uint8_t> (), "Epoch enum is not the proper type");
+	static_assert (static_cast<uint8_t> (nano::epoch::max) < (1 << 5), "Epoch max is too large for the sideband");
+
+public:
+	block_details () = default;
+	block_details (nano::epoch const epoch_a, bool const is_send_a, bool const is_receive_a, bool const is_epoch_a);
+	static constexpr size_t size ()
+	{
+		return 1;
+	}
+	bool operator== (block_details const & other_a) const;
+	void serialize (nano::stream &) const;
+	bool deserialize (nano::stream &);
+	nano::epoch epoch{ nano::epoch::epoch_0 };
+	bool is_send{ false };
+	bool is_receive{ false };
+	bool is_epoch{ false };
+
+private:
+	uint8_t packed () const;
+	void unpack (uint8_t);
+
+public: // Logging
+	void operator() (nano::object_stream &) const;
+};
+
+std::string state_subtype (nano::block_details const);
+
+class block_sideband final
+{
+public:
+	block_sideband () = default;
+	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::block_details const &, nano::epoch const source_epoch_a);
+	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::epoch const epoch_a, bool const is_send, bool const is_receive, bool const is_epoch, nano::epoch const source_epoch_a);
+	void serialize (nano::stream &, nano::block_type) const;
+	bool deserialize (nano::stream &, nano::block_type);
+	static size_t size (nano::block_type);
+	nano::block_hash successor{ 0 };
+	nano::account account{};
+	nano::amount balance{ 0 };
+	uint64_t height{ 0 };
+	uint64_t timestamp{ 0 };
+	nano::block_details details;
+	nano::epoch source_epoch{ nano::epoch::epoch_0 };
+
+public: // Logging
+	void operator() (nano::object_stream &) const;
+};
+} // namespace nano
diff --git a/nano/lib/block_type.cpp b/nano/lib/block_type.cpp
new file mode 100644
index 00000000..4afb9b0f
--- /dev/null
+++ b/nano/lib/block_type.cpp
@@ -0,0 +1,13 @@
+#include <nano/lib/block_type.hpp>
+
+#include <magic_enum.hpp>
+
+std::string_view nano::to_string (nano::block_type type)
+{
+	return magic_enum::enum_name (type);
+}
+
+void nano::serialize_block_type (nano::stream & stream, const nano::block_type & type)
+{
+	nano::write (stream, type);
+}
diff --git a/nano/lib/block_type.hpp b/nano/lib/block_type.hpp
new file mode 100644
index 00000000..020722e3
--- /dev/null
+++ b/nano/lib/block_type.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <nano/lib/stream.hpp>
+
+#include <cstdint>
+#include <string>
+
+namespace nano
+{
+enum class block_type : uint8_t
+{
+	invalid = 0,
+	not_a_block = 1,
+	send = 2,
+	receive = 3,
+	open = 4,
+	change = 5,
+	state = 6
+};
+
+std::string_view to_string (block_type);
+/**
+ * Serialize block type as an 8-bit value
+ */
+void serialize_block_type (nano::stream &, nano::block_type const &);
+} // namespace nano
diff --git a/nano/lib/block_uniquer.hpp b/nano/lib/block_uniquer.hpp
new file mode 100644
index 00000000..d39bb3af
--- /dev/null
+++ b/nano/lib/block_uniquer.hpp
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <nano/lib/numbers.hpp>
+#include <nano/lib/uniquer.hpp>
+
+namespace nano
+{
+class block;
+using block_uniquer = nano::uniquer<nano::uint256_union, nano::block>;
+}
diff --git a/nano/lib/blockbuilders.cpp b/nano/lib/blockbuilders.cpp
index 69b375eb..d8fa600f 100644
--- a/nano/lib/blockbuilders.cpp
+++ b/nano/lib/blockbuilders.cpp
@@ -1,4 +1,7 @@
 #include <nano/lib/blockbuilders.hpp>
+#include <nano/lib/blocks.hpp>
+#include <nano/lib/errors.hpp>
+#include <nano/lib/utility.hpp>
 
 #include <unordered_map>
 
diff --git a/nano/lib/blockbuilders.hpp b/nano/lib/blockbuilders.hpp
index 077d5840..1471c9bb 100644
--- a/nano/lib/blockbuilders.hpp
+++ b/nano/lib/blockbuilders.hpp
@@ -1,9 +1,18 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
+#include <nano/lib/numbers.hpp>
 
 #include <memory>
 
+namespace nano
+{
+class change_block;
+class send_block;
+class state_block;
+class open_block;
+class receive_block;
+}
+
 namespace nano
 {
 /** Flags to track builder state */
diff --git a/nano/lib/blocks.cpp b/nano/lib/blocks.cpp
index 3a13bb38..688e614d 100644
--- a/nano/lib/blocks.cpp
+++ b/nano/lib/blocks.cpp
@@ -13,6 +13,12 @@
 #include <cryptopp/words.h>
 #include <magic_enum.hpp>
 
+size_t constexpr nano::send_block::size;
+size_t constexpr nano::receive_block::size;
+size_t constexpr nano::open_block::size;
+size_t constexpr nano::change_block::size;
+size_t constexpr nano::state_block::size;
+
 /** Compare blocks, first by type, then content. This is an optimization over dynamic_cast, which is very slow on some platforms. */
 namespace
 {
@@ -1443,11 +1449,6 @@ std::shared_ptr<nano::block> nano::deserialize_block_json (boost::property_tree:
 	return result;
 }
 
-void nano::serialize_block_type (nano::stream & stream, const nano::block_type & type)
-{
-	nano::write (stream, type);
-}
-
 void nano::serialize_block (nano::stream & stream_a, nano::block const & block_a)
 {
 	nano::serialize_block_type (stream_a, block_a.type ());
@@ -1986,8 +1987,3 @@ void nano::block_sideband::operator() (nano::object_stream & obs) const
 	obs.write ("source_epoch", source_epoch);
 	obs.write ("details", details);
 }
-
-std::string_view nano::to_string (nano::block_type type)
-{
-	return magic_enum::enum_name (type);
-}
diff --git a/nano/lib/blocks.hpp b/nano/lib/blocks.hpp
index 19c31d95..e89f2ddd 100644
--- a/nano/lib/blocks.hpp
+++ b/nano/lib/blocks.hpp
@@ -1,89 +1,23 @@
 #pragma once
 
-#include <nano/crypto/blake2/blake2.h>
+#include <nano/lib/block_sideband.hpp>
+#include <nano/lib/block_uniquer.hpp>
+#include <nano/lib/config.hpp>
 #include <nano/lib/epoch.hpp>
 #include <nano/lib/errors.hpp>
 #include <nano/lib/numbers.hpp>
-#include <nano/lib/object_stream.hpp>
 #include <nano/lib/optional_ptr.hpp>
 #include <nano/lib/stream.hpp>
-#include <nano/lib/timer.hpp>
-#include <nano/lib/uniquer.hpp>
-#include <nano/lib/utility.hpp>
-#include <nano/lib/work.hpp>
 
 #include <boost/property_tree/ptree_fwd.hpp>
 
-#include <unordered_map>
+typedef struct blake2b_state__ blake2b_state;
 
 namespace nano
 {
 class block_visitor;
 class mutable_block_visitor;
-
-enum class block_type : uint8_t
-{
-	invalid = 0,
-	not_a_block = 1,
-	send = 2,
-	receive = 3,
-	open = 4,
-	change = 5,
-	state = 6
-};
-
-std::string_view to_string (block_type);
-
-class block_details
-{
-	static_assert (std::is_same<std::underlying_type<nano::epoch>::type, uint8_t> (), "Epoch enum is not the proper type");
-	static_assert (static_cast<uint8_t> (nano::epoch::max) < (1 << 5), "Epoch max is too large for the sideband");
-
-public:
-	block_details () = default;
-	block_details (nano::epoch const epoch_a, bool const is_send_a, bool const is_receive_a, bool const is_epoch_a);
-	static constexpr size_t size ()
-	{
-		return 1;
-	}
-	bool operator== (block_details const & other_a) const;
-	void serialize (nano::stream &) const;
-	bool deserialize (nano::stream &);
-	nano::epoch epoch{ nano::epoch::epoch_0 };
-	bool is_send{ false };
-	bool is_receive{ false };
-	bool is_epoch{ false };
-
-private:
-	uint8_t packed () const;
-	void unpack (uint8_t);
-
-public: // Logging
-	void operator() (nano::object_stream &) const;
-};
-
-std::string state_subtype (nano::block_details const);
-
-class block_sideband final
-{
-public:
-	block_sideband () = default;
-	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::block_details const &, nano::epoch const source_epoch_a);
-	block_sideband (nano::account const &, nano::block_hash const &, nano::amount const &, uint64_t const, nano::seconds_t const local_timestamp, nano::epoch const epoch_a, bool const is_send, bool const is_receive, bool const is_epoch, nano::epoch const source_epoch_a);
-	void serialize (nano::stream &, nano::block_type) const;
-	bool deserialize (nano::stream &, nano::block_type);
-	static size_t size (nano::block_type);
-	nano::block_hash successor{ 0 };
-	nano::account account{};
-	nano::amount balance{ 0 };
-	uint64_t height{ 0 };
-	uint64_t timestamp{ 0 };
-	nano::block_details details;
-	nano::epoch source_epoch{ nano::epoch::epoch_0 };
-
-public: // Logging
-	void operator() (nano::object_stream &) const;
-};
+class object_stream;
 
 class block
 {
@@ -146,8 +80,6 @@ public: // Logging
 	virtual void operator() (nano::object_stream &) const;
 };
 
-using block_list_t = std::vector<std::shared_ptr<nano::block>>;
-
 class send_hashables
 {
 public:
@@ -441,15 +373,9 @@ public:
 	virtual ~mutable_block_visitor () = default;
 };
 
-using block_uniquer = nano::uniquer<nano::uint256_union, nano::block>;
-
 std::shared_ptr<nano::block> deserialize_block (nano::stream &);
 std::shared_ptr<nano::block> deserialize_block (nano::stream &, nano::block_type, nano::block_uniquer * = nullptr);
 std::shared_ptr<nano::block> deserialize_block_json (boost::property_tree::ptree const &, nano::block_uniquer * = nullptr);
-/**
- * Serialize block type as an 8-bit value
- */
-void serialize_block_type (nano::stream &, nano::block_type const &);
 /**
  * Serialize a block prefixed with an 8-bit typecode
  */
diff --git a/nano/lib/config.cpp b/nano/lib/config.cpp
index 7f40e3b0..1839d741 100644
--- a/nano/lib/config.cpp
+++ b/nano/lib/config.cpp
@@ -1,3 +1,4 @@
+#include <nano/crypto/blake2/blake2.h>
 #include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/logging.hpp>
diff --git a/nano/lib/work.cpp b/nano/lib/work.cpp
index 480dba57..90a74095 100644
--- a/nano/lib/work.cpp
+++ b/nano/lib/work.cpp
@@ -1,3 +1,4 @@
+#include <nano/crypto/blake2/blake2.h>
 #include <nano/crypto_lib/random_pool.hpp>
 #include <nano/lib/blocks.hpp>
 #include <nano/lib/epoch.hpp>
diff --git a/nano/load_test/entry.cpp b/nano/load_test/entry.cpp
index e41e376a..13f56e38 100644
--- a/nano/load_test/entry.cpp
+++ b/nano/load_test/entry.cpp
@@ -4,6 +4,7 @@
 #include <nano/boost/beast/core/flat_buffer.hpp>
 #include <nano/boost/beast/http.hpp>
 #include <nano/boost/process/child.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/lib/threading.hpp>
diff --git a/nano/nano_node/entry.cpp b/nano/nano_node/entry.cpp
index 25b17af5..3c5b79a6 100644
--- a/nano/nano_node/entry.cpp
+++ b/nano/nano_node/entry.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/cli.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/lib/utility.hpp>
diff --git a/nano/node/active_transactions.cpp b/nano/node/active_transactions.cpp
index 585bb428..2545c5d4 100644
--- a/nano/node/active_transactions.cpp
+++ b/nano/node/active_transactions.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/node/active_transactions.hpp>
 #include <nano/node/confirmation_height_processor.hpp>
diff --git a/nano/node/blockprocessor.cpp b/nano/node/blockprocessor.cpp
index 24ed8067..731a000f 100644
--- a/nano/node/blockprocessor.cpp
+++ b/nano/node/blockprocessor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/lib/timer.hpp>
 #include <nano/node/blockprocessor.hpp>
diff --git a/nano/node/blockprocessor.hpp b/nano/node/blockprocessor.hpp
index 3cc7663c..f0dae027 100644
--- a/nano/node/blockprocessor.hpp
+++ b/nano/node/blockprocessor.hpp
@@ -1,6 +1,5 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/secure/common.hpp>
 
@@ -10,6 +9,13 @@
 #include <optional>
 #include <thread>
 
+namespace nano
+{
+class block;
+class node;
+class write_database_queue;
+}
+
 namespace nano::store
 {
 class write_transaction;
@@ -17,8 +23,6 @@ class write_transaction;
 
 namespace nano
 {
-class node;
-class write_database_queue;
 
 enum class block_source
 {
diff --git a/nano/node/bootstrap/block_deserializer.hpp b/nano/node/bootstrap/block_deserializer.hpp
index 9e53aa79..98499200 100644
--- a/nano/node/bootstrap/block_deserializer.hpp
+++ b/nano/node/bootstrap/block_deserializer.hpp
@@ -1,6 +1,8 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
+#include <nano/lib/block_type.hpp>
+
+#include <boost/system/error_code.hpp>
 
 #include <memory>
 #include <vector>
diff --git a/nano/node/bootstrap/bootstrap_attempt.cpp b/nano/node/bootstrap/bootstrap_attempt.cpp
index 4057dd8e..390d5026 100644
--- a/nano/node/bootstrap/bootstrap_attempt.cpp
+++ b/nano/node/bootstrap/bootstrap_attempt.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/bootstrap/bootstrap.hpp>
 #include <nano/node/bootstrap/bootstrap_attempt.hpp>
 #include <nano/node/bootstrap/bootstrap_bulk_push.hpp>
diff --git a/nano/node/bootstrap/bootstrap_bulk_pull.cpp b/nano/node/bootstrap/bootstrap_bulk_pull.cpp
index 276e6441..cad42863 100644
--- a/nano/node/bootstrap/bootstrap_bulk_pull.cpp
+++ b/nano/node/bootstrap/bootstrap_bulk_pull.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/bootstrap/block_deserializer.hpp>
 #include <nano/node/bootstrap/bootstrap.hpp>
 #include <nano/node/bootstrap/bootstrap_bulk_pull.hpp>
diff --git a/nano/node/bootstrap/bootstrap_bulk_push.cpp b/nano/node/bootstrap/bootstrap_bulk_push.cpp
index 5ff069ba..8a1e8111 100644
--- a/nano/node/bootstrap/bootstrap_bulk_push.cpp
+++ b/nano/node/bootstrap/bootstrap_bulk_push.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/bootstrap/bootstrap_attempt.hpp>
 #include <nano/node/bootstrap/bootstrap_bulk_push.hpp>
 #include <nano/node/bootstrap/bootstrap_legacy.hpp>
diff --git a/nano/node/bootstrap/bootstrap_frontier.hpp b/nano/node/bootstrap/bootstrap_frontier.hpp
index 1f6575cd..75ee9c1a 100644
--- a/nano/node/bootstrap/bootstrap_frontier.hpp
+++ b/nano/node/bootstrap/bootstrap_frontier.hpp
@@ -1,7 +1,10 @@
 #pragma once
 
+#include <nano/lib/numbers.hpp>
+
 #include <deque>
 #include <future>
+#include <memory>
 
 namespace nano
 {
diff --git a/nano/node/bootstrap/bootstrap_lazy.cpp b/nano/node/bootstrap/bootstrap_lazy.cpp
index 49cd39c0..14393798 100644
--- a/nano/node/bootstrap/bootstrap_lazy.cpp
+++ b/nano/node/bootstrap/bootstrap_lazy.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/bootstrap/bootstrap.hpp>
 #include <nano/node/bootstrap/bootstrap_lazy.hpp>
 #include <nano/node/common.hpp>
diff --git a/nano/node/bootstrap/bootstrap_server.cpp b/nano/node/bootstrap/bootstrap_server.cpp
index 078d374d..3128b9ad 100644
--- a/nano/node/bootstrap/bootstrap_server.cpp
+++ b/nano/node/bootstrap/bootstrap_server.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/utility.hpp>
 #include <nano/node/bootstrap/bootstrap_server.hpp>
 #include <nano/node/transport/channel.hpp>
diff --git a/nano/node/bootstrap_ascending/service.cpp b/nano/node/bootstrap_ascending/service.cpp
index 0b6c85b7..2db59429 100644
--- a/nano/node/bootstrap_ascending/service.cpp
+++ b/nano/node/bootstrap_ascending/service.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats_enums.hpp>
 #include <nano/node/blockprocessor.hpp>
 #include <nano/node/bootstrap_ascending/service.hpp>
diff --git a/nano/node/cli.cpp b/nano/node/cli.cpp
index bc829fcb..984f1656 100644
--- a/nano/node/cli.cpp
+++ b/nano/node/cli.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/cli.hpp>
 #include <nano/lib/tlsconfig.hpp>
 #include <nano/lib/tomlconfig.hpp>
diff --git a/nano/node/confirmation_height_bounded.cpp b/nano/node/confirmation_height_bounded.cpp
index 26cc21b4..53c3ffbf 100644
--- a/nano/node/confirmation_height_bounded.cpp
+++ b/nano/node/confirmation_height_bounded.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/node/confirmation_height_bounded.hpp>
 #include <nano/node/write_database_queue.hpp>
diff --git a/nano/node/confirmation_height_processor.cpp b/nano/node/confirmation_height_processor.cpp
index 4b9d9d82..e6081644 100644
--- a/nano/node/confirmation_height_processor.cpp
+++ b/nano/node/confirmation_height_processor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/numbers.hpp>
 #include <nano/lib/thread_roles.hpp>
 #include <nano/lib/utility.hpp>
@@ -239,3 +240,8 @@ nano::block_hash nano::confirmation_height_processor::current () const
 	nano::lock_guard<nano::mutex> lk (mutex);
 	return original_block ? original_block->hash () : 0;
 }
+
+std::reference_wrapper<nano::block_hash const> nano::confirmation_height_processor::block_wrapper::hash () const
+{
+	return block->hash ();
+}
diff --git a/nano/node/confirmation_height_processor.hpp b/nano/node/confirmation_height_processor.hpp
index d3126783..828a6161 100644
--- a/nano/node/confirmation_height_processor.hpp
+++ b/nano/node/confirmation_height_processor.hpp
@@ -65,10 +65,7 @@ private:
 		{
 		}
 
-		std::reference_wrapper<nano::block_hash const> hash () const
-		{
-			return block->hash ();
-		}
+		std::reference_wrapper<nano::block_hash const> hash () const;
 
 		std::shared_ptr<nano::block> block;
 	};
diff --git a/nano/node/confirmation_height_unbounded.cpp b/nano/node/confirmation_height_unbounded.cpp
index 18c1e0dc..03c4c42a 100644
--- a/nano/node/confirmation_height_unbounded.cpp
+++ b/nano/node/confirmation_height_unbounded.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/node/confirmation_height_unbounded.hpp>
 #include <nano/node/write_database_queue.hpp>
diff --git a/nano/node/confirmation_solicitor.cpp b/nano/node/confirmation_solicitor.cpp
index cece99c5..feb78245 100644
--- a/nano/node/confirmation_solicitor.cpp
+++ b/nano/node/confirmation_solicitor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/confirmation_solicitor.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/nodeconfig.hpp>
diff --git a/nano/node/election.cpp b/nano/node/election.cpp
index d967201d..d01d3718 100644
--- a/nano/node/election.cpp
+++ b/nano/node/election.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/confirmation_solicitor.hpp>
 #include <nano/node/election.hpp>
 #include <nano/node/network.hpp>
@@ -801,4 +802,4 @@ void nano::election_extended_status::operator() (nano::object_stream & obs) cons
 		obs.write ("hash", block->hash ().to_string ());
 		obs.write ("amount", amount);
 	});
-}
\ No newline at end of file
+}
diff --git a/nano/node/epoch_upgrader.cpp b/nano/node/epoch_upgrader.cpp
index 9072b532..48007b35 100644
--- a/nano/node/epoch_upgrader.cpp
+++ b/nano/node/epoch_upgrader.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/node/epoch_upgrader.hpp>
 #include <nano/node/node.hpp>
diff --git a/nano/node/json_handler.cpp b/nano/node/json_handler.cpp
index 9fdf72b3..2639aa44 100644
--- a/nano/node/json_handler.cpp
+++ b/nano/node/json_handler.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/json_error_response.hpp>
 #include <nano/lib/timer.hpp>
diff --git a/nano/node/local_block_broadcaster.cpp b/nano/node/local_block_broadcaster.cpp
index 0e5097e5..59c0e4df 100644
--- a/nano/node/local_block_broadcaster.cpp
+++ b/nano/node/local_block_broadcaster.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/lib/utility.hpp>
 #include <nano/node/blockprocessor.hpp>
@@ -167,4 +168,9 @@ std::unique_ptr<nano::container_info_component> nano::local_block_broadcaster::c
 	auto composite = std::make_unique<container_info_composite> (name);
 	composite->add_component (std::make_unique<container_info_leaf> (container_info{ "local", local_blocks.size (), sizeof (decltype (local_blocks)::value_type) }));
 	return composite;
-}
\ No newline at end of file
+}
+
+nano::block_hash nano::local_block_broadcaster::local_entry::hash () const
+{
+	return block->hash ();
+}
diff --git a/nano/node/local_block_broadcaster.hpp b/nano/node/local_block_broadcaster.hpp
index 486fe855..b4e7093d 100644
--- a/nano/node/local_block_broadcaster.hpp
+++ b/nano/node/local_block_broadcaster.hpp
@@ -1,6 +1,5 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
 #include <nano/lib/locks.hpp>
 #include <nano/lib/processing_queue.hpp>
 #include <nano/node/bandwidth_limiter.hpp>
@@ -66,10 +65,7 @@ private:
 		std::chrono::steady_clock::time_point const arrival;
 		mutable std::chrono::steady_clock::time_point last_broadcast{}; // Not part of any index
 
-		nano::block_hash hash () const
-		{
-			return block->hash ();
-		}
+		nano::block_hash hash () const;
 	};
 
 	// clang-format off
diff --git a/nano/node/messages.hpp b/nano/node/messages.hpp
index 68d5d424..11d96d6b 100644
--- a/nano/node/messages.hpp
+++ b/nano/node/messages.hpp
@@ -1,7 +1,7 @@
 #pragma once
 
 #include <nano/lib/asio.hpp>
-#include <nano/lib/blocks.hpp>
+#include <nano/lib/block_uniquer.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/errors.hpp>
 #include <nano/lib/jsonconfig.hpp>
diff --git a/nano/node/network.cpp b/nano/node/network.cpp
index 0c9cf226..5da1940e 100644
--- a/nano/node/network.cpp
+++ b/nano/node/network.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool_shuffle.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/lib/utility.hpp>
 #include <nano/node/bootstrap_ascending/service.hpp>
diff --git a/nano/node/node.cpp b/nano/node/node.cpp
index 4ed49e6e..09d119f2 100644
--- a/nano/node/node.cpp
+++ b/nano/node/node.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stream.hpp>
 #include <nano/lib/tomlconfig.hpp>
 #include <nano/lib/utility.hpp>
diff --git a/nano/node/node.hpp b/nano/node/node.hpp
index 0776b728..d4105e61 100644
--- a/nano/node/node.hpp
+++ b/nano/node/node.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <nano/lib/block_uniquer.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/stats.hpp>
diff --git a/nano/node/nodeconfig.cpp b/nano/node/nodeconfig.cpp
index 175d7847..beb93cb4 100644
--- a/nano/node/nodeconfig.cpp
+++ b/nano/node/nodeconfig.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/jsonconfig.hpp>
 #include <nano/lib/rpcconfig.hpp>
@@ -560,4 +561,4 @@ nano::account nano::node_config::random_representative () const
 	std::size_t index (nano::random_pool::generate_word32 (0, static_cast<CryptoPP::word32> (preconfigured_representatives.size () - 1)));
 	auto result (preconfigured_representatives[index]);
 	return result;
-}
\ No newline at end of file
+}
diff --git a/nano/node/request_aggregator.cpp b/nano/node/request_aggregator.cpp
index 452f0e0b..f822ace9 100644
--- a/nano/node/request_aggregator.cpp
+++ b/nano/node/request_aggregator.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/node/active_transactions.hpp>
 #include <nano/node/common.hpp>
diff --git a/nano/node/scheduler/optimistic.cpp b/nano/node/scheduler/optimistic.cpp
index bd524795..8672d976 100644
--- a/nano/node/scheduler/optimistic.cpp
+++ b/nano/node/scheduler/optimistic.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/tomlconfig.hpp>
 #include <nano/node/node.hpp>
diff --git a/nano/node/scheduler/priority.cpp b/nano/node/scheduler/priority.cpp
index 649502c1..66d2008b 100644
--- a/nano/node/scheduler/priority.cpp
+++ b/nano/node/scheduler/priority.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/node.hpp>
 #include <nano/node/scheduler/buckets.hpp>
 #include <nano/node/scheduler/priority.hpp>
diff --git a/nano/node/telemetry.cpp b/nano/node/telemetry.cpp
index e1fe6ece..5e5b15fd 100644
--- a/nano/node/telemetry.cpp
+++ b/nano/node/telemetry.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/node/network.hpp>
@@ -439,4 +440,4 @@ nano::telemetry_data nano::consolidate_telemetry_data (std::vector<nano::telemet
 	consolidated_data.maker = boost::lexical_cast<uint8_t> (version_fragments[4]);
 
 	return consolidated_data;
-}
\ No newline at end of file
+}
diff --git a/nano/node/unchecked_map.cpp b/nano/node/unchecked_map.cpp
index b20651d7..4d65a40d 100644
--- a/nano/node/unchecked_map.cpp
+++ b/nano/node/unchecked_map.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/locks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/stats_enums.hpp>
diff --git a/nano/node/voting.cpp b/nano/node/voting.cpp
index 9ea31745..9967f7ed 100644
--- a/nano/node/voting.cpp
+++ b/nano/node/voting.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/stats.hpp>
 #include <nano/lib/utility.hpp>
 #include <nano/node/network.hpp>
diff --git a/nano/node/wallet.cpp b/nano/node/wallet.cpp
index e1c2d7a8..53380f4b 100644
--- a/nano/node/wallet.cpp
+++ b/nano/node/wallet.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/threading.hpp>
 #include <nano/lib/utility.hpp>
 #include <nano/node/election.hpp>
diff --git a/nano/node/websocket.cpp b/nano/node/websocket.cpp
index c2b3af2f..dbd16637 100644
--- a/nano/node/websocket.cpp
+++ b/nano/node/websocket.cpp
@@ -1,6 +1,7 @@
 #include <nano/boost/asio/bind_executor.hpp>
 #include <nano/boost/asio/dispatch.hpp>
 #include <nano/boost/asio/strand.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/tlsconfig.hpp>
 #include <nano/lib/work.hpp>
@@ -1078,4 +1079,4 @@ void nano::websocket_server::stop ()
 	{
 		server->stop ();
 	}
-}
\ No newline at end of file
+}
diff --git a/nano/node/websocket.hpp b/nano/node/websocket.hpp
index 6bb7426a..4b58bae7 100644
--- a/nano/node/websocket.hpp
+++ b/nano/node/websocket.hpp
@@ -1,6 +1,5 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
 #include <nano/lib/numbers.hpp>
 #include <nano/lib/work.hpp>
 #include <nano/node/common.hpp>
@@ -20,6 +19,7 @@
 
 namespace nano
 {
+class block;
 class wallets;
 class logger;
 class vote;
diff --git a/nano/qt/qt.cpp b/nano/qt/qt.cpp
index 73f719bf..22c4221c 100644
--- a/nano/qt/qt.cpp
+++ b/nano/qt/qt.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/qt/qt.hpp>
 
diff --git a/nano/qt_test/qt.cpp b/nano/qt_test/qt.cpp
index 3f1972bd..6ff9e931 100644
--- a/nano/qt_test/qt.cpp
+++ b/nano/qt_test/qt.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/make_store.hpp>
 #include <nano/qt/qt.hpp>
 #include <nano/test_common/network.hpp>
diff --git a/nano/rpc_test/receivable.cpp b/nano/rpc_test/receivable.cpp
index 81563180..65821616 100644
--- a/nano/rpc_test/receivable.cpp
+++ b/nano/rpc_test/receivable.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/ipc/ipc_server.hpp>
 #include <nano/rpc/rpc_request_processor.hpp>
 #include <nano/rpc_test/common.hpp>
diff --git a/nano/rpc_test/rpc.cpp b/nano/rpc_test/rpc.cpp
index da0b1af1..f6fe1b06 100644
--- a/nano/rpc_test/rpc.cpp
+++ b/nano/rpc_test/rpc.cpp
@@ -1,5 +1,6 @@
 #include <nano/boost/beast/core/flat_buffer.hpp>
 #include <nano/boost/beast/http.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/rpcconfig.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/lib/threading.hpp>
diff --git a/nano/secure/common.cpp b/nano/secure/common.cpp
index d34f9daf..091e45fc 100644
--- a/nano/secure/common.cpp
+++ b/nano/secure/common.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/numbers.hpp>
 #include <nano/lib/timer.hpp>
@@ -17,12 +18,6 @@
 #include <cryptopp/words.h>
 #include <magic_enum.hpp>
 
-size_t constexpr nano::send_block::size;
-size_t constexpr nano::receive_block::size;
-size_t constexpr nano::open_block::size;
-size_t constexpr nano::change_block::size;
-size_t constexpr nano::state_block::size;
-
 nano::networks nano::network_constants::active_network = nano::networks::ACTIVE_NETWORK;
 
 namespace
diff --git a/nano/secure/common.hpp b/nano/secure/common.hpp
index 2e183267..9ce68582 100644
--- a/nano/secure/common.hpp
+++ b/nano/secure/common.hpp
@@ -2,7 +2,6 @@
 
 #include <nano/crypto/blake2/blake2.h>
 #include <nano/lib/blockbuilders.hpp>
-#include <nano/lib/blocks.hpp>
 #include <nano/lib/config.hpp>
 #include <nano/lib/epoch.hpp>
 #include <nano/lib/numbers.hpp>
diff --git a/nano/secure/ledger.cpp b/nano/secure/ledger.cpp
index c27abacb..561a87c0 100644
--- a/nano/secure/ledger.cpp
+++ b/nano/secure/ledger.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/rep_weights.hpp>
 #include <nano/lib/stats.hpp>
diff --git a/nano/secure/network_filter.cpp b/nano/secure/network_filter.cpp
index 059cddb3..c60a1117 100644
--- a/nano/secure/network_filter.cpp
+++ b/nano/secure/network_filter.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/locks.hpp>
 #include <nano/lib/stream.hpp>
 #include <nano/secure/common.hpp>
diff --git a/nano/secure/utility.cpp b/nano/secure/utility.cpp
index d7e263d8..07d64724 100644
--- a/nano/secure/utility.cpp
+++ b/nano/secure/utility.cpp
@@ -2,6 +2,8 @@
 #include <nano/secure/utility.hpp>
 #include <nano/secure/working.hpp>
 
+#include <boost/system/error_code.hpp>
+
 #include <random>
 
 static std::vector<std::filesystem::path> all_unique_paths;
diff --git a/nano/slow_test/node.cpp b/nano/slow_test/node.cpp
index b9b8e4ed..7aa3a4d3 100644
--- a/nano/slow_test/node.cpp
+++ b/nano/slow_test/node.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/logging.hpp>
 #include <nano/lib/thread_runner.hpp>
 #include <nano/node/election.hpp>
diff --git a/nano/slow_test/vote_cache.cpp b/nano/slow_test/vote_cache.cpp
index 3c4a7ccb..1e0b4aba 100644
--- a/nano/slow_test/vote_cache.cpp
+++ b/nano/slow_test/vote_cache.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/test_common/rate_observer.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/slow_test/vote_processor.cpp b/nano/slow_test/vote_processor.cpp
index ff1ae1f5..4dc3c099 100644
--- a/nano/slow_test/vote_processor.cpp
+++ b/nano/slow_test/vote_processor.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/transport/inproc.hpp>
 #include <nano/node/vote_processor.hpp>
 #include <nano/test_common/system.hpp>
diff --git a/nano/store/CMakeLists.txt b/nano/store/CMakeLists.txt
index a992ba59..bf79b03e 100644
--- a/nano/store/CMakeLists.txt
+++ b/nano/store/CMakeLists.txt
@@ -5,6 +5,7 @@ add_library(
   component.hpp
   confirmation_height.hpp
   db_val.hpp
+  db_val_impl.hpp
   iterator.hpp
   iterator_impl.hpp
   final.hpp
diff --git a/nano/store/block.hpp b/nano/store/block.hpp
index 826aafc4..ad1fd559 100644
--- a/nano/store/block.hpp
+++ b/nano/store/block.hpp
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
+#include <nano/lib/block_sideband.hpp>
 #include <nano/lib/numbers.hpp>
 #include <nano/store/component.hpp>
 #include <nano/store/iterator.hpp>
@@ -9,6 +9,7 @@
 
 namespace nano
 {
+class block;
 class block_hash;
 }
 namespace nano::store
diff --git a/nano/store/component.cpp b/nano/store/component.cpp
index cd68dc2a..67826f63 100644
--- a/nano/store/component.cpp
+++ b/nano/store/component.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/timer.hpp>
 #include <nano/store/account.hpp>
 #include <nano/store/block.hpp>
diff --git a/nano/store/db_val.hpp b/nano/store/db_val.hpp
index 957492e2..a9fc4cc8 100644
--- a/nano/store/db_val.hpp
+++ b/nano/store/db_val.hpp
@@ -9,6 +9,11 @@
 
 #include <cstddef>
 
+namespace nano
+{
+class block;
+}
+
 namespace nano::store
 {
 /**
@@ -92,15 +97,7 @@ public:
 		static_assert (std::is_standard_layout<nano::endpoint_key>::value, "Standard layout is required");
 	}
 
-	db_val (std::shared_ptr<nano::block> const & val_a) :
-		buffer (std::make_shared<std::vector<uint8_t>> ())
-	{
-		{
-			nano::vectorstream stream (*buffer);
-			nano::serialize_block (stream, *val_a);
-		}
-		convert_buffer_to_value ();
-	}
+	db_val (std::shared_ptr<nano::block> const & val_a);
 
 	db_val (uint64_t val_a) :
 		buffer (std::make_shared<std::vector<uint8_t>> ())
@@ -209,16 +206,7 @@ public:
 		return result;
 	}
 
-	explicit operator block_w_sideband () const
-	{
-		nano::bufferstream stream (reinterpret_cast<uint8_t const *> (data ()), size ());
-		nano::store::block_w_sideband block_w_sideband;
-		block_w_sideband.block = (nano::deserialize_block (stream));
-		auto error = block_w_sideband.sideband.deserialize (stream, block_w_sideband.block->type ());
-		release_assert (!error);
-		block_w_sideband.block->sideband_set (block_w_sideband.sideband);
-		return block_w_sideband;
-	}
+	explicit operator block_w_sideband () const;
 
 	explicit operator std::nullptr_t () const
 	{
@@ -230,12 +218,7 @@ public:
 		return no_value::dummy;
 	}
 
-	explicit operator std::shared_ptr<nano::block> () const
-	{
-		nano::bufferstream stream (reinterpret_cast<uint8_t const *> (data ()), size ());
-		std::shared_ptr<nano::block> result (nano::deserialize_block (stream));
-		return result;
-	}
+	explicit operator std::shared_ptr<nano::block> () const;
 
 	template <typename Block>
 	std::shared_ptr<Block> convert_to_block () const
diff --git a/nano/store/db_val_impl.hpp b/nano/store/db_val_impl.hpp
new file mode 100644
index 00000000..a8de6f00
--- /dev/null
+++ b/nano/store/db_val_impl.hpp
@@ -0,0 +1,33 @@
+#include <nano/lib/blocks.hpp>
+#include <nano/store/db_val.hpp>
+
+template <typename T>
+nano::store::db_val<T>::db_val (std::shared_ptr<nano::block> const & val_a) :
+	buffer (std::make_shared<std::vector<uint8_t>> ())
+{
+	{
+		nano::vectorstream stream (*buffer);
+		nano::serialize_block (stream, *val_a);
+	}
+	convert_buffer_to_value ();
+}
+
+template <typename T>
+nano::store::db_val<T>::operator std::shared_ptr<nano::block> () const
+{
+	nano::bufferstream stream (reinterpret_cast<uint8_t const *> (data ()), size ());
+	std::shared_ptr<nano::block> result (nano::deserialize_block (stream));
+	return result;
+}
+
+template <typename T>
+nano::store::db_val<T>::operator nano::store::block_w_sideband () const
+{
+	nano::bufferstream stream (reinterpret_cast<uint8_t const *> (data ()), size ());
+	nano::store::block_w_sideband block_w_sideband;
+	block_w_sideband.block = (nano::deserialize_block (stream));
+	auto error = block_w_sideband.sideband.deserialize (stream, block_w_sideband.block->type ());
+	release_assert (!error);
+	block_w_sideband.block->sideband_set (block_w_sideband.sideband);
+	return block_w_sideband;
+}
diff --git a/nano/store/lmdb/block.cpp b/nano/store/lmdb/block.cpp
index ff6113f0..38e695ba 100644
--- a/nano/store/lmdb/block.cpp
+++ b/nano/store/lmdb/block.cpp
@@ -1,4 +1,5 @@
 #include <nano/secure/parallel_traversal.hpp>
+#include <nano/store/db_val_impl.hpp>
 #include <nano/store/lmdb/block.hpp>
 #include <nano/store/lmdb/lmdb.hpp>
 
diff --git a/nano/store/lmdb/lmdb_env.cpp b/nano/store/lmdb/lmdb_env.cpp
index e66511da..cd1897c8 100644
--- a/nano/store/lmdb/lmdb_env.cpp
+++ b/nano/store/lmdb/lmdb_env.cpp
@@ -1,6 +1,8 @@
 #include <nano/lib/utility.hpp>
 #include <nano/store/lmdb/lmdb_env.hpp>
 
+#include <boost/system/error_code.hpp>
+
 nano::store::lmdb::env::env (bool & error_a, std::filesystem::path const & path_a, nano::store::lmdb::env::options options_a)
 {
 	init (error_a, path_a, options_a);
diff --git a/nano/store/rocksdb/block.cpp b/nano/store/rocksdb/block.cpp
index 2fe5365e..a910e0cc 100644
--- a/nano/store/rocksdb/block.cpp
+++ b/nano/store/rocksdb/block.cpp
@@ -1,4 +1,5 @@
 #include <nano/secure/parallel_traversal.hpp>
+#include <nano/store/db_val_impl.hpp>
 #include <nano/store/rocksdb/block.hpp>
 #include <nano/store/rocksdb/rocksdb.hpp>
 
diff --git a/nano/store/rocksdb/rocksdb.cpp b/nano/store/rocksdb/rocksdb.cpp
index 09997258..43b82f2b 100644
--- a/nano/store/rocksdb/rocksdb.cpp
+++ b/nano/store/rocksdb/rocksdb.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/lib/rocksdbconfig.hpp>
 #include <nano/store/rocksdb/iterator.hpp>
 #include <nano/store/rocksdb/rocksdb.hpp>
diff --git a/nano/store/versioning.hpp b/nano/store/versioning.hpp
index 01605353..b165eef7 100644
--- a/nano/store/versioning.hpp
+++ b/nano/store/versioning.hpp
@@ -1,6 +1,5 @@
 #pragma once
 
-#include <nano/lib/blocks.hpp>
 #include <nano/secure/common.hpp>
 
 struct MDB_val;
diff --git a/nano/test_common/chains.cpp b/nano/test_common/chains.cpp
index e7a745a3..9bc2fa99 100644
--- a/nano/test_common/chains.cpp
+++ b/nano/test_common/chains.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/test_common/chains.hpp>
 
 using namespace std::chrono_literals;
diff --git a/nano/test_common/chains.hpp b/nano/test_common/chains.hpp
index 2004159c..f8fd4229 100644
--- a/nano/test_common/chains.hpp
+++ b/nano/test_common/chains.hpp
@@ -8,6 +8,11 @@
 #include <memory>
 #include <vector>
 
+namespace nano
+{
+using block_list_t = std::vector<std::shared_ptr<nano::block>>;
+}
+
 /*
  * Helper functions to deal with common chain setup scenarios
  */
diff --git a/nano/test_common/ledger.cpp b/nano/test_common/ledger.cpp
index 063000f3..a4c91533 100644
--- a/nano/test_common/ledger.cpp
+++ b/nano/test_common/ledger.cpp
@@ -1,3 +1,4 @@
+#include <nano/lib/blocks.hpp>
 #include <nano/node/make_store.hpp>
 #include <nano/node/node.hpp>
 #include <nano/test_common/ledger.hpp>
diff --git a/nano/test_common/system.cpp b/nano/test_common/system.cpp
index 3ba0ce00..efbd13dd 100644
--- a/nano/test_common/system.cpp
+++ b/nano/test_common/system.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/node/common.hpp>
 #include <nano/test_common/system.hpp>
 #include <nano/test_common/testutil.hpp>
diff --git a/nano/test_common/testutil.cpp b/nano/test_common/testutil.cpp
index fcdd79e6..e7eab6a2 100644
--- a/nano/test_common/testutil.cpp
+++ b/nano/test_common/testutil.cpp
@@ -1,4 +1,5 @@
 #include <nano/crypto_lib/random_pool.hpp>
+#include <nano/lib/blocks.hpp>
 #include <nano/node/scheduler/component.hpp>
 #include <nano/node/scheduler/manual.hpp>
 #include <nano/node/scheduler/priority.hpp>